While reading an interesting story book in my room，______________.

A．the light suddenly went out

B．the doorbell rang

C．someone was shouting outside

D．I heard someone shouting outside

因修建跨（穿）越高速公路的桥梁、渡槽、管线等设施造成高速公路及其设施损毁的，应由（）负责修复或者赔偿经济损失。